Mercurial > hg
annotate mercurial/fileset.py @ 46325:e5e6282fa66a
hghave: split apart testing for the curses module and `tic` executable
ef771d329961 skipped the check for the `tic` executable, because the curses
module alone on Windows is enough to pass the `test-*-curses.t` tests. However,
`test-status-color.t` uses this same check and explicitly invoked the
executable, which fails on Windows. From the cursory searching I did, curses on
unix requires `tic`, which I assume is why they were tied together in the first
place. So this continues to require both to get past the curses guards on non
Windows platforms.
Differential Revision: https://phab.mercurial-scm.org/D9814
author | Matt Harbison <matt_harbison@yahoo.com> |
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date | Sun, 17 Jan 2021 22:25:15 -0500 |
parents | 89a2afe31e82 |
children | d4ba4d51f85f |
rev | line source |
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1 # fileset.py - file set queries for mercurial |
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3 # Copyright 2010 Matt Mackall <mpm@selenic.com> | |
4 # | |
5 # This software may be used and distributed according to the terms of the | |
6 # GNU General Public License version 2 or any later version. | |
7 | |
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8 from __future__ import absolute_import |
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9 |
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10 import errno |
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11 import re |
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12 |
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13 from .i18n import _ |
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14 from .pycompat import getattr |
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15 from . import ( |
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16 error, |
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17 filesetlang, |
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18 match as matchmod, |
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19 mergestate as mergestatemod, |
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20 pycompat, |
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21 registrar, |
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22 scmutil, |
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23 util, |
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24 ) |
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25 from .utils import stringutil |
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27 # common weight constants |
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28 _WEIGHT_CHECK_FILENAME = filesetlang.WEIGHT_CHECK_FILENAME |
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29 _WEIGHT_READ_CONTENTS = filesetlang.WEIGHT_READ_CONTENTS |
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30 _WEIGHT_STATUS = filesetlang.WEIGHT_STATUS |
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31 _WEIGHT_STATUS_THOROUGH = filesetlang.WEIGHT_STATUS_THOROUGH |
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32 |
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33 # helpers for processing parsed tree |
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34 getsymbol = filesetlang.getsymbol |
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35 getstring = filesetlang.getstring |
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36 _getkindpat = filesetlang.getkindpat |
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37 getpattern = filesetlang.getpattern |
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38 getargs = filesetlang.getargs |
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39 |
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40 |
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41 def getmatch(mctx, x): |
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42 if not x: |
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43 raise error.ParseError(_(b"missing argument")) |
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44 return methods[x[0]](mctx, *x[1:]) |
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45 |
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46 |
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47 def getmatchwithstatus(mctx, x, hint): |
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48 keys = set(getstring(hint, b'status hint must be a string').split()) |
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49 return getmatch(mctx.withstatus(keys), x) |
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50 |
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51 |
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52 def stringmatch(mctx, x): |
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53 return mctx.matcher([x]) |
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54 |
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55 |
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56 def kindpatmatch(mctx, x, y): |
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57 return stringmatch( |
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58 mctx, |
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59 _getkindpat( |
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60 x, y, matchmod.allpatternkinds, _(b"pattern must be a string") |
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61 ), |
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62 ) |
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63 |
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64 |
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65 def patternsmatch(mctx, *xs): |
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66 allkinds = matchmod.allpatternkinds |
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67 patterns = [ |
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68 getpattern(x, allkinds, _(b"pattern must be a string")) for x in xs |
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69 ] |
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70 return mctx.matcher(patterns) |
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71 |
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72 |
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73 def andmatch(mctx, x, y): |
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74 xm = getmatch(mctx, x) |
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75 ym = getmatch(mctx.narrowed(xm), y) |
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76 return matchmod.intersectmatchers(xm, ym) |
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77 |
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78 |
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79 def ormatch(mctx, *xs): |
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80 ms = [getmatch(mctx, x) for x in xs] |
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81 return matchmod.unionmatcher(ms) |
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82 |
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83 |
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84 def notmatch(mctx, x): |
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85 m = getmatch(mctx, x) |
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86 return mctx.predicate(lambda f: not m(f), predrepr=(b'<not %r>', m)) |
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87 |
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88 |
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89 def minusmatch(mctx, x, y): |
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90 xm = getmatch(mctx, x) |
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91 ym = getmatch(mctx.narrowed(xm), y) |
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92 return matchmod.differencematcher(xm, ym) |
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93 |
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94 |
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95 def listmatch(mctx, *xs): |
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96 raise error.ParseError( |
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97 _(b"can't use a list in this context"), |
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98 hint=_(b'see \'hg help "filesets.x or y"\''), |
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99 ) |
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101 |
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102 def func(mctx, a, b): |
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103 funcname = getsymbol(a) |
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104 if funcname in symbols: |
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105 return symbols[funcname](mctx, b) |
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106 |
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107 keep = lambda fn: getattr(fn, '__doc__', None) is not None |
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108 |
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109 syms = [s for (s, fn) in symbols.items() if keep(fn)] |
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110 raise error.UnknownIdentifier(funcname, syms) |
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111 |
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112 |
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113 # symbols are callable like: |
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114 # fun(mctx, x) |
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115 # with: |
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116 # mctx - current matchctx instance |
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117 # x - argument in tree form |
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118 symbols = filesetlang.symbols |
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119 |
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120 predicate = registrar.filesetpredicate(symbols) |
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121 |
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122 |
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123 @predicate(b'modified()', callstatus=True, weight=_WEIGHT_STATUS) |
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124 def modified(mctx, x): |
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125 """File that is modified according to :hg:`status`.""" |
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126 # i18n: "modified" is a keyword |
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127 getargs(x, 0, 0, _(b"modified takes no arguments")) |
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128 s = set(mctx.status().modified) |
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129 return mctx.predicate(s.__contains__, predrepr=b'modified') |
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130 |
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131 |
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132 @predicate(b'added()', callstatus=True, weight=_WEIGHT_STATUS) |
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133 def added(mctx, x): |
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134 """File that is added according to :hg:`status`.""" |
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135 # i18n: "added" is a keyword |
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136 getargs(x, 0, 0, _(b"added takes no arguments")) |
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137 s = set(mctx.status().added) |
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138 return mctx.predicate(s.__contains__, predrepr=b'added') |
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139 |
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140 |
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141 @predicate(b'removed()', callstatus=True, weight=_WEIGHT_STATUS) |
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142 def removed(mctx, x): |
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143 """File that is removed according to :hg:`status`.""" |
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144 # i18n: "removed" is a keyword |
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145 getargs(x, 0, 0, _(b"removed takes no arguments")) |
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146 s = set(mctx.status().removed) |
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147 return mctx.predicate(s.__contains__, predrepr=b'removed') |
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148 |
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149 |
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150 @predicate(b'deleted()', callstatus=True, weight=_WEIGHT_STATUS) |
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151 def deleted(mctx, x): |
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152 """Alias for ``missing()``.""" |
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153 # i18n: "deleted" is a keyword |
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154 getargs(x, 0, 0, _(b"deleted takes no arguments")) |
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155 s = set(mctx.status().deleted) |
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156 return mctx.predicate(s.__contains__, predrepr=b'deleted') |
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157 |
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158 |
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159 @predicate(b'missing()', callstatus=True, weight=_WEIGHT_STATUS) |
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160 def missing(mctx, x): |
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161 """File that is missing according to :hg:`status`.""" |
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162 # i18n: "missing" is a keyword |
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163 getargs(x, 0, 0, _(b"missing takes no arguments")) |
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164 s = set(mctx.status().deleted) |
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165 return mctx.predicate(s.__contains__, predrepr=b'deleted') |
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166 |
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167 |
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168 @predicate(b'unknown()', callstatus=True, weight=_WEIGHT_STATUS_THOROUGH) |
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169 def unknown(mctx, x): |
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170 """File that is unknown according to :hg:`status`.""" |
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171 # i18n: "unknown" is a keyword |
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172 getargs(x, 0, 0, _(b"unknown takes no arguments")) |
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173 s = set(mctx.status().unknown) |
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174 return mctx.predicate(s.__contains__, predrepr=b'unknown') |
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175 |
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176 |
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177 @predicate(b'ignored()', callstatus=True, weight=_WEIGHT_STATUS_THOROUGH) |
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178 def ignored(mctx, x): |
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179 """File that is ignored according to :hg:`status`.""" |
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180 # i18n: "ignored" is a keyword |
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181 getargs(x, 0, 0, _(b"ignored takes no arguments")) |
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182 s = set(mctx.status().ignored) |
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183 return mctx.predicate(s.__contains__, predrepr=b'ignored') |
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184 |
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185 |
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186 @predicate(b'clean()', callstatus=True, weight=_WEIGHT_STATUS) |
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187 def clean(mctx, x): |
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188 """File that is clean according to :hg:`status`.""" |
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189 # i18n: "clean" is a keyword |
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190 getargs(x, 0, 0, _(b"clean takes no arguments")) |
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191 s = set(mctx.status().clean) |
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192 return mctx.predicate(s.__contains__, predrepr=b'clean') |
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193 |
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194 |
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195 @predicate(b'tracked()') |
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196 def tracked(mctx, x): |
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197 """File that is under Mercurial control.""" |
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198 # i18n: "tracked" is a keyword |
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199 getargs(x, 0, 0, _(b"tracked takes no arguments")) |
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200 return mctx.predicate(mctx.ctx.__contains__, predrepr=b'tracked') |
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201 |
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202 |
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203 @predicate(b'binary()', weight=_WEIGHT_READ_CONTENTS) |
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204 def binary(mctx, x): |
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205 """File that appears to be binary (contains NUL bytes).""" |
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206 # i18n: "binary" is a keyword |
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207 getargs(x, 0, 0, _(b"binary takes no arguments")) |
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208 return mctx.fpredicate( |
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209 lambda fctx: fctx.isbinary(), predrepr=b'binary', cache=True |
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210 ) |
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211 |
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212 |
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213 @predicate(b'exec()') |
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214 def exec_(mctx, x): |
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215 """File that is marked as executable.""" |
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216 # i18n: "exec" is a keyword |
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217 getargs(x, 0, 0, _(b"exec takes no arguments")) |
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218 ctx = mctx.ctx |
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219 return mctx.predicate(lambda f: ctx.flags(f) == b'x', predrepr=b'exec') |
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220 |
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221 |
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222 @predicate(b'symlink()') |
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223 def symlink(mctx, x): |
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224 """File that is marked as a symlink.""" |
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225 # i18n: "symlink" is a keyword |
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226 getargs(x, 0, 0, _(b"symlink takes no arguments")) |
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227 ctx = mctx.ctx |
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228 return mctx.predicate(lambda f: ctx.flags(f) == b'l', predrepr=b'symlink') |
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229 |
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230 |
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231 @predicate(b'resolved()', weight=_WEIGHT_STATUS) |
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232 def resolved(mctx, x): |
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233 """File that is marked resolved according to :hg:`resolve -l`.""" |
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234 # i18n: "resolved" is a keyword |
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235 getargs(x, 0, 0, _(b"resolved takes no arguments")) |
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236 if mctx.ctx.rev() is not None: |
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237 return mctx.never() |
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238 ms = mergestatemod.mergestate.read(mctx.ctx.repo()) |
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239 return mctx.predicate( |
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240 lambda f: f in ms and ms[f] == b'r', predrepr=b'resolved' |
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241 ) |
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242 |
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243 |
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244 @predicate(b'unresolved()', weight=_WEIGHT_STATUS) |
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245 def unresolved(mctx, x): |
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246 """File that is marked unresolved according to :hg:`resolve -l`.""" |
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247 # i18n: "unresolved" is a keyword |
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248 getargs(x, 0, 0, _(b"unresolved takes no arguments")) |
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249 if mctx.ctx.rev() is not None: |
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250 return mctx.never() |
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251 ms = mergestatemod.mergestate.read(mctx.ctx.repo()) |
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252 return mctx.predicate( |
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253 lambda f: f in ms and ms[f] == b'u', predrepr=b'unresolved' |
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254 ) |
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255 |
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256 |
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257 @predicate(b'hgignore()', weight=_WEIGHT_STATUS) |
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259 """File that matches the active .hgignore pattern.""" |
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260 # i18n: "hgignore" is a keyword |
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261 getargs(x, 0, 0, _(b"hgignore takes no arguments")) |
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262 return mctx.ctx.repo().dirstate._ignore |
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264 |
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265 @predicate(b'portable()', weight=_WEIGHT_CHECK_FILENAME) |
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266 def portable(mctx, x): |
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267 """File that has a portable name. (This doesn't include filenames with case |
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268 collisions.) |
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269 """ |
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270 # i18n: "portable" is a keyword |
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271 getargs(x, 0, 0, _(b"portable takes no arguments")) |
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272 return mctx.predicate( |
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273 lambda f: util.checkwinfilename(f) is None, predrepr=b'portable' |
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274 ) |
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275 |
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276 |
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277 @predicate(b'grep(regex)', weight=_WEIGHT_READ_CONTENTS) |
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278 def grep(mctx, x): |
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279 """File contains the given regular expression.""" |
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280 try: |
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281 # i18n: "grep" is a keyword |
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282 r = re.compile(getstring(x, _(b"grep requires a pattern"))) |
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283 except re.error as e: |
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284 raise error.ParseError( |
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285 _(b'invalid match pattern: %s') % stringutil.forcebytestr(e) |
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286 ) |
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287 return mctx.fpredicate( |
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288 lambda fctx: r.search(fctx.data()), |
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289 predrepr=(b'grep(%r)', r.pattern), |
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290 cache=True, |
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291 ) |
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292 |
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293 |
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294 def _sizetomax(s): |
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295 try: |
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296 s = s.strip().lower() |
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297 for k, v in util._sizeunits: |
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298 if s.endswith(k): |
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299 # max(4k) = 5k - 1, max(4.5k) = 4.6k - 1 |
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300 n = s[: -len(k)] |
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301 inc = 1.0 |
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302 if b"." in n: |
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303 inc /= 10 ** len(n.split(b".")[1]) |
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304 return int((float(n) + inc) * v) - 1 |
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305 # no extension, this is a precise value |
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306 return int(s) |
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307 except ValueError: |
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308 raise error.ParseError(_(b"couldn't parse size: %s") % s) |
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309 |
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310 |
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311 def sizematcher(expr): |
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312 """Return a function(size) -> bool from the ``size()`` expression""" |
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313 expr = expr.strip() |
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314 if b'-' in expr: # do we have a range? |
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315 a, b = expr.split(b'-', 1) |
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316 a = util.sizetoint(a) |
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317 b = util.sizetoint(b) |
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318 return lambda x: x >= a and x <= b |
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319 elif expr.startswith(b"<="): |
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320 a = util.sizetoint(expr[2:]) |
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321 return lambda x: x <= a |
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322 elif expr.startswith(b"<"): |
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323 a = util.sizetoint(expr[1:]) |
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324 return lambda x: x < a |
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325 elif expr.startswith(b">="): |
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326 a = util.sizetoint(expr[2:]) |
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327 return lambda x: x >= a |
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328 elif expr.startswith(b">"): |
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329 a = util.sizetoint(expr[1:]) |
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330 return lambda x: x > a |
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331 else: |
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332 a = util.sizetoint(expr) |
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333 b = _sizetomax(expr) |
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334 return lambda x: x >= a and x <= b |
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335 |
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336 |
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337 @predicate(b'size(expression)', weight=_WEIGHT_STATUS) |
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338 def size(mctx, x): |
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339 """File size matches the given expression. Examples: |
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340 |
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341 - size('1k') - files from 1024 to 2047 bytes |
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342 - size('< 20k') - files less than 20480 bytes |
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343 - size('>= .5MB') - files at least 524288 bytes |
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344 - size('4k - 1MB') - files from 4096 bytes to 1048576 bytes |
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345 """ |
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346 # i18n: "size" is a keyword |
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347 expr = getstring(x, _(b"size requires an expression")) |
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348 m = sizematcher(expr) |
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349 return mctx.fpredicate( |
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350 lambda fctx: m(fctx.size()), predrepr=(b'size(%r)', expr), cache=True |
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351 ) |
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352 |
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353 |
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354 @predicate(b'encoding(name)', weight=_WEIGHT_READ_CONTENTS) |
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355 def encoding(mctx, x): |
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356 """File can be successfully decoded with the given character |
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357 encoding. May not be useful for encodings other than ASCII and |
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358 UTF-8. |
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359 """ |
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360 |
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361 # i18n: "encoding" is a keyword |
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362 enc = getstring(x, _(b"encoding requires an encoding name")) |
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363 |
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364 def encp(fctx): |
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365 d = fctx.data() |
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366 try: |
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367 d.decode(pycompat.sysstr(enc)) |
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368 return True |
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369 except LookupError: |
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370 raise error.Abort(_(b"unknown encoding '%s'") % enc) |
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371 except UnicodeDecodeError: |
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372 return False |
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373 |
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374 return mctx.fpredicate(encp, predrepr=(b'encoding(%r)', enc), cache=True) |
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375 |
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376 |
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377 @predicate(b'eol(style)', weight=_WEIGHT_READ_CONTENTS) |
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378 def eol(mctx, x): |
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379 """File contains newlines of the given style (dos, unix, mac). Binary |
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380 files are excluded, files with mixed line endings match multiple |
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381 styles. |
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382 """ |
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383 |
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384 # i18n: "eol" is a keyword |
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385 enc = getstring(x, _(b"eol requires a style name")) |
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386 |
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387 def eolp(fctx): |
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388 if fctx.isbinary(): |
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389 return False |
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390 d = fctx.data() |
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391 if (enc == b'dos' or enc == b'win') and b'\r\n' in d: |
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392 return True |
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393 elif enc == b'unix' and re.search(b'(?<!\r)\n', d): |
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394 return True |
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395 elif enc == b'mac' and re.search(b'\r(?!\n)', d): |
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396 return True |
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397 return False |
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398 |
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399 return mctx.fpredicate(eolp, predrepr=(b'eol(%r)', enc), cache=True) |
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400 |
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401 |
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402 @predicate(b'copied()') |
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403 def copied(mctx, x): |
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404 """File that is recorded as being copied.""" |
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405 # i18n: "copied" is a keyword |
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406 getargs(x, 0, 0, _(b"copied takes no arguments")) |
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407 |
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408 def copiedp(fctx): |
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409 p = fctx.parents() |
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410 return p and p[0].path() != fctx.path() |
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411 |
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412 return mctx.fpredicate(copiedp, predrepr=b'copied', cache=True) |
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413 |
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414 |
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415 @predicate(b'revs(revs, pattern)', weight=_WEIGHT_STATUS) |
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416 def revs(mctx, x): |
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417 """Evaluate set in the specified revisions. If the revset match multiple |
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418 revs, this will return file matching pattern in any of the revision. |
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419 """ |
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420 # i18n: "revs" is a keyword |
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421 r, x = getargs(x, 2, 2, _(b"revs takes two arguments")) |
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422 # i18n: "revs" is a keyword |
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423 revspec = getstring(r, _(b"first argument to revs must be a revision")) |
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424 repo = mctx.ctx.repo() |
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425 revs = scmutil.revrange(repo, [revspec]) |
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426 |
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427 matchers = [] |
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428 for r in revs: |
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429 ctx = repo[r] |
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430 mc = mctx.switch(ctx.p1(), ctx) |
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431 matchers.append(getmatch(mc, x)) |
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432 if not matchers: |
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433 return mctx.never() |
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434 if len(matchers) == 1: |
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435 return matchers[0] |
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436 return matchmod.unionmatcher(matchers) |
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437 |
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438 |
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439 @predicate(b'status(base, rev, pattern)', weight=_WEIGHT_STATUS) |
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440 def status(mctx, x): |
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441 """Evaluate predicate using status change between ``base`` and |
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442 ``rev``. Examples: |
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443 |
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444 - ``status(3, 7, added())`` - matches files added from "3" to "7" |
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445 """ |
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446 repo = mctx.ctx.repo() |
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447 # i18n: "status" is a keyword |
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448 b, r, x = getargs(x, 3, 3, _(b"status takes three arguments")) |
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449 # i18n: "status" is a keyword |
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450 baseerr = _(b"first argument to status must be a revision") |
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451 baserevspec = getstring(b, baseerr) |
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452 if not baserevspec: |
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453 raise error.ParseError(baseerr) |
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454 reverr = _(b"second argument to status must be a revision") |
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455 revspec = getstring(r, reverr) |
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456 if not revspec: |
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457 raise error.ParseError(reverr) |
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458 basectx, ctx = scmutil.revpair(repo, [baserevspec, revspec]) |
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459 mc = mctx.switch(basectx, ctx) |
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460 return getmatch(mc, x) |
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461 |
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462 |
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463 @predicate(b'subrepo([pattern])') |
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464 def subrepo(mctx, x): |
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465 """Subrepositories whose paths match the given pattern.""" |
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466 # i18n: "subrepo" is a keyword |
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467 getargs(x, 0, 1, _(b"subrepo takes at most one argument")) |
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468 ctx = mctx.ctx |
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469 sstate = ctx.substate |
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470 if x: |
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471 pat = getpattern( |
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472 x, |
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473 matchmod.allpatternkinds, |
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474 # i18n: "subrepo" is a keyword |
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475 _(b"subrepo requires a pattern or no arguments"), |
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476 ) |
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477 fast = not matchmod.patkind(pat) |
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478 if fast: |
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479 |
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480 def m(s): |
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481 return s == pat |
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482 |
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483 else: |
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484 m = matchmod.match(ctx.repo().root, b'', [pat], ctx=ctx) |
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485 return mctx.predicate( |
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486 lambda f: f in sstate and m(f), predrepr=(b'subrepo(%r)', pat) |
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487 ) |
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488 else: |
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489 return mctx.predicate(sstate.__contains__, predrepr=b'subrepo') |
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490 |
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491 |
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492 methods = { |
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493 b'withstatus': getmatchwithstatus, |
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494 b'string': stringmatch, |
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495 b'symbol': stringmatch, |
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496 b'kindpat': kindpatmatch, |
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497 b'patterns': patternsmatch, |
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498 b'and': andmatch, |
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499 b'or': ormatch, |
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500 b'minus': minusmatch, |
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501 b'list': listmatch, |
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502 b'not': notmatch, |
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503 b'func': func, |
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504 } |
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505 |
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506 |
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507 class matchctx(object): |
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508 def __init__(self, basectx, ctx, cwd, badfn=None): |
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509 self._basectx = basectx |
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510 self.ctx = ctx |
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511 self._badfn = badfn |
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512 self._match = None |
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513 self._status = None |
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514 self.cwd = cwd |
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515 |
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516 def narrowed(self, match): |
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517 """Create matchctx for a sub-tree narrowed by the given matcher""" |
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518 mctx = matchctx(self._basectx, self.ctx, self.cwd, self._badfn) |
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519 mctx._match = match |
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520 # leave wider status which we don't have to care |
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521 mctx._status = self._status |
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522 return mctx |
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523 |
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524 def switch(self, basectx, ctx): |
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525 mctx = matchctx(basectx, ctx, self.cwd, self._badfn) |
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526 mctx._match = self._match |
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527 return mctx |
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528 |
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529 def withstatus(self, keys): |
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530 """Create matchctx which has precomputed status specified by the keys""" |
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531 mctx = matchctx(self._basectx, self.ctx, self.cwd, self._badfn) |
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532 mctx._match = self._match |
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533 mctx._buildstatus(keys) |
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534 return mctx |
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535 |
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536 def _buildstatus(self, keys): |
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537 self._status = self._basectx.status( |
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538 self.ctx, |
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539 self._match, |
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540 listignored=b'ignored' in keys, |
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541 listclean=b'clean' in keys, |
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542 listunknown=b'unknown' in keys, |
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543 ) |
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544 |
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545 def status(self): |
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546 return self._status |
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547 |
14673 | 548 def matcher(self, patterns): |
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549 return self.ctx.match(patterns, badfn=self._badfn, cwd=self.cwd) |
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550 |
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551 def predicate(self, predfn, predrepr=None, cache=False): |
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552 """Create a matcher to select files by predfn(filename)""" |
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553 if cache: |
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554 predfn = util.cachefunc(predfn) |
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555 return matchmod.predicatematcher( |
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556 predfn, predrepr=predrepr, badfn=self._badfn |
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557 ) |
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558 |
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559 def fpredicate(self, predfn, predrepr=None, cache=False): |
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560 """Create a matcher to select files by predfn(fctx) at the current |
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561 revision |
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562 |
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563 Missing files are ignored. |
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564 """ |
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565 ctx = self.ctx |
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566 if ctx.rev() is None: |
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567 |
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568 def fctxpredfn(f): |
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569 try: |
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570 fctx = ctx[f] |
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571 except error.LookupError: |
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572 return False |
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573 try: |
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574 fctx.audit() |
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575 except error.Abort: |
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576 return False |
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577 try: |
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578 return predfn(fctx) |
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579 except (IOError, OSError) as e: |
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580 # open()-ing a directory fails with EACCES on Windows |
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581 if e.errno in ( |
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582 errno.ENOENT, |
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583 errno.EACCES, |
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584 errno.ENOTDIR, |
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585 errno.EISDIR, |
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586 ): |
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587 return False |
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588 raise |
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589 |
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590 else: |
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591 |
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592 def fctxpredfn(f): |
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593 try: |
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594 fctx = ctx[f] |
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595 except error.LookupError: |
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596 return False |
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597 return predfn(fctx) |
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598 |
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599 return self.predicate(fctxpredfn, predrepr=predrepr, cache=cache) |
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600 |
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601 def never(self): |
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602 """Create a matcher to select nothing""" |
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603 return matchmod.never(badfn=self._badfn) |
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604 |
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605 |
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606 def match(ctx, cwd, expr, badfn=None): |
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607 """Create a matcher for a single fileset expression""" |
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608 tree = filesetlang.parse(expr) |
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609 tree = filesetlang.analyze(tree) |
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610 tree = filesetlang.optimize(tree) |
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611 mctx = matchctx(ctx.p1(), ctx, cwd, badfn=badfn) |
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612 return getmatch(mctx, tree) |
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613 |
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614 |
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615 def loadpredicate(ui, extname, registrarobj): |
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616 """Load fileset predicates from specified registrarobj""" |
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617 for name, func in pycompat.iteritems(registrarobj._table): |
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618 symbols[name] = func |
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619 |
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620 |
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621 # tell hggettext to extract docstrings from these functions: |
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622 i18nfunctions = symbols.values() |